CN206772482U - Cable force measurement device based on hall effect - Google Patents
Cable force measurement device based on hall effect Download PDFInfo
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- CN206772482U CN206772482U CN201720683097.XU CN201720683097U CN206772482U CN 206772482 U CN206772482 U CN 206772482U CN 201720683097 U CN201720683097 U CN 201720683097U CN 206772482 U CN206772482 U CN 206772482U
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Abstract
Cable force measurement device of the utility model based on Hall effect belongs to science of bridge building field of measuring technique；The device includes two sections for fan-shaped folder cylinder, two folder cylinders are relative, end face abuts and connected with hinge, and presss from both sides in cylinder and is circumferentially provided with slipmat in uniform thickness, when pressing from both sides cylinder closure for two, two other end faces are parallel, and be screwed, two block permanent magnets are provided with parallel end faces, and opposite face polarity is different, ensure to press from both sides in cylinder opening and have the uniform magnetic field of vertical level, in addition to be fixed on ground and be placed in pressing from both sides the Hall sensor in the uniform magnetic field in cylinder opening；Cable force measurement device of this practicality based on Hall effect, sensing unit design is simple, cheap, and measurement accuracy is high, and measuring apparatus is simple and convenient, suitable for construction and the cable force measurement of operation stage.
Description
Technical field
Cable force measurement device of the utility model based on Hall effect belongs to science of bridge building field of measuring technique.
Background technology
Hoist cable is the important supporting member of cable-stayed bridge, suspension bridge, it is necessary to adjust the rope of hoist cable in the design and construction of bridge
Power, bridge is set to be in optimal stress；Simultaneously after bridge comes into operation, in the later stage in the maintenance process of bridge, also needing
To adjust Suo Li in time, be allowed to meet design requirement, so accurately measured the Suo Li of bridge sling, to bridge construction with
And later stage operation maintenance plays very important effect.
In the existing measuring method to bridge cable force, pressure gauge method is only applicable to bridge with pressure sensor calibrating method and applied
The work stage, wherein pressure gauge method need to carry out artificial reading to pressure dial plate, and measurement error is big to hanging the measurement of cable force；Sensor
Standardization need to be pre-buried such as anchorage zone by sensor, and load-bearing scope it is big pressure sensor it is expensive.Frequency method is hung with obtaining
Rope vibration frequency is means, can ask for the Suo Li of hoist cable indirectly using frequency and Suo Li mechanical equations.Frequency method at present more to be used
Acceleration transducer picks up the vibration frequency of hoist cable, but high there is sensor cost, and data acquisition equipment is complicated, and by bridge
Vibration additive effect of the surface vibration on hoist cable influences, and causes measurement accuracy to reduce.
Utility model content
In order to solve the above problems, the utility model provides the cable force measurement device based on Hall effect, and the device can
For construction and the cable force measurement of operation stage, measurement accuracy is high, and equipment cost is low.
What the purpose of this utility model was realized in：
Cable force measurement device based on Hall effect, including two sections are fan-shaped folder cylinder, and two folder cylinders are relative, end face
Abut and connect with hinge, press from both sides in cylinder and slipmat in uniform thickness is circumferentially installed, when pressing from both sides cylinder closure for two, in addition two
Individual end face is parallel, and is screwed, and two block permanent magnets is provided with parallel end faces, and opposite face polarity is different, it is ensured that folder cylinder
There is the uniform magnetic field of vertical level in opening；
Also include the Hall sensor being fixed in the uniform magnetic field that ground is placed in folder cylinder opening.
The above-mentioned cable force measurement device based on Hall effect, two pins of described Hall sensor connect electricity respectively
Source VCC is connected to the reverse input end of amplifier by resistance R1, amplifier is connected to by resistance R2 with ground, the 3rd pin
Positive input, resistance R3 be respectively connecting to amplifier reverse input end and output end form reversely amplification, forward direction input
End is grounded through resistance R2, and output end is connected to filtering shaping circuit；
Described filtering shaping circuit is connected to the reverse input end of amplifier by the output of change-over circuit by resistance R4,
The reverse input end of amplifier is grounded by electric capacity C1, and the positive input of amplifier is grounded by resistance R5, passes through series connection
Resistance R6, R7 are connected to output end and form hysteresis loop comparator, and output end passes through resistance R7 connection single-chip microcomputers.
Beneficial effect：Cable force measurement device of the utility model based on Hall effect, the device make use of Hall sensor
In even high gradient magnetic field, there is good linear relationship to measure for hall electromotive force and the displacement of output.When hoist cable shakes
When dynamic, the permanent magnet being fixed on hoist cable will be moved with respect to Hall sensor, be protected in the operating current of Hall sensor
Hold it is constant in the case of, the hall electromotive force of output will be relevant with frequency with the Oscillation Amplitude of hoist cable, passes through corresponding measurement
Circuit transmits a signal to single-chip microcomputer and carries out signal transacting, obtains the vibration frequency of hoist cable.Sensing unit design is simple, and price is low
It is honest and clean, and measurement accuracy is high, measuring apparatus is simple and convenient, suitable for construction and the cable force measurement of operation stage.
Brief description of the drawings
Fig. 1 is the structural representation of cable force measurement device of the utility model based on Hall effect.
Fig. 2 is the circuit diagram of the utility model amplifying circuit.
Fig. 3 is the circuit diagram of the utility model filtering shaping circuit.
In figure：1 folder cylinder, 2 slipmat, 3 permanent magnets, 4 Hall sensors, 5 screws, 6 hinges.
Embodiment
The utility model embodiment is described in further detail below in conjunction with the accompanying drawings.
Specific embodiment one
The cable force measurement device based on Hall effect of the present embodiment, structural representation is as shown in figure 1, including two sections
For the folder cylinder 1 of sector, two folder cylinders 1 are relative, and end face abuts and connected with hinge 6, and it is uniform to be circumferentially provided with thickness in folder cylinder
Slipmat 2, when two press from both sides cylinders 1 close when, two end faces in addition are parallel, and are fixed with screw 5, are provided with parallel end faces
Two block permanent magnets 3, and opposite face polarity is different, it is ensured that folder cylinder 1 be open in have the uniform magnetic field of vertical level；
Also include the Hall sensor 4 being fixed in the uniform magnetic field that ground is placed in the folder opening of cylinder 1.
The device make use of Hall sensor 4 in even high gradient magnetic field, and hall electromotive force and the displacement of output have
Good linear relationship measures.When hoist cable vibrates, the permanent magnet 3 being fixed on hoist cable will be with respect to Hall sensor 4
Moved, in the case where the operating current of Hall sensor 4 keeps constant, the hall electromotive force of output will be with hoist cable
Oscillation Amplitude, frequency are relevant, and transmitting a signal to single-chip microcomputer by corresponding measuring circuit carries out signal transacting, obtains hoist cable
Vibration frequency.
Specific embodiment two
The cable force measurement device based on Hall effect of the present embodiment, circuit diagram such as Fig. 2, Fig. 3 institute of converted measurement circuit
Show, on the basis of specific embodiment one, two pins for further limiting Hall sensor 4 connect power supply VCC and ground respectively,
3rd pin is connected to the reverse input end of amplifier by resistance R1, and being connected to the positive of amplifier by resistance R2 inputs
End, resistance R3 is respectively connecting to the reverse input end of amplifier and output end forms reversely amplification, and positive input is through resistance R2
Ground connection, output end are connected to filtering shaping circuit；
Described filtering shaping circuit is connected to the reverse input end of amplifier by the output of change-over circuit by resistance R4,
The reverse input end of amplifier is grounded by electric capacity C1, and the positive input of amplifier is grounded by resistance R5, passes through series connection
Resistance R6, R7 are connected to output end and form hysteresis loop comparator, and output end passes through resistance R7 connection single-chip microcomputers.
After drag-line produces vibration under external drive, the permanent magnet 3 of installation can also be vibrated with drag-line in folder cylinder 1,
Also that is, Hall sensor 4 moves up and down in the even high gradient magnetic field that permanent magnet 3 is formed, further there is Hall sensor
4 produce hall electromotive force, are amplified in amplifying circuit, and after filter circuit is filtered, signal is carried out using hysteresis loop comparator
Shaping, it is then fed into single-chip microcomputer and is handled.
The frequency of induced electromotive force is equal with inhaul cable vibration frequency, and the device measures to induced electromotive force, by picking up
The vibration frequency of the frequency indirect gain drag-line of induced electromotive force is taken, then passes through the mechanical equation of drag-line frequency and Cable power
Ask for Suo Li T, mechanical equation such as following formula：
T=4ml2f2
Wherein, T represents Cable power (N), and m represents drag-line line density (kg/m), and l represents drag-line computational length (m), f tables
Show vibration frequency (Hz).
Claims (2)
1. the cable force measurement device based on Hall effect, it is characterised in that：Folder cylinder (1) including two sections for sector, two
Pressing from both sides cylinder (1) relatively, end face abuts and uses hinge (6) to connect, and presss from both sides in cylinder and is circumferentially provided with slipmat in uniform thickness (2), when
During two folder cylinder (1) closures, two end faces in addition are parallel, and fixed with screw (5), and two blocks of permanent magnetism are provided with parallel end faces
Iron (3), and opposite face polarity is different, it is ensured that there is the uniform magnetic field of vertical level in folder cylinder (1) opening；
Also include the Hall sensor (4) being fixed in the uniform magnetic field that ground is placed in folder cylinder (1) opening.
2. the cable force measurement device according to claim 1 based on Hall effect, it is characterised in that：Described hall sensing
Two pins of device (4) connect power supply VCC and ground respectively, and the 3rd pin is connected to the reverse input of amplifier by resistance R1
End, is connected to the positive input of amplifier by resistance R2, and resistance R3 is respectively connecting to the reverse input end of amplifier and defeated
Go out end and form reversely amplification, positive input is grounded through resistance R2, and output end is connected to filtering shaping circuit；
Described filtering shaping circuit is connected to the reverse input end of amplifier by the output of change-over circuit by resistance R4, amplification
The reverse input end of device is grounded by electric capacity C1, and the positive input of amplifier is grounded by resistance R5, passes through the resistance of series connection
R6, R7 are connected to output end and form hysteresis loop comparator, and output end passes through resistance R7 connection single-chip microcomputers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720683097.XU CN206772482U (en) | 2017-06-13 | 2017-06-13 | Cable force measurement device based on hall effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720683097.XU CN206772482U (en) | 2017-06-13 | 2017-06-13 | Cable force measurement device based on hall effect |
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| Publication Number | Publication Date |
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| CN206772482U true CN206772482U (en) | 2017-12-19 |
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| CN201720683097.XU Active CN206772482U (en) | 2017-06-13 | 2017-06-13 | Cable force measurement device based on hall effect |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668669A (en) * | 2019-01-12 | 2019-04-23 | 尚廷东 | A kind of pin-connected panel cable force measurement device for the measurement of rope rope tension |
| CN113358246A (en) * | 2021-06-17 | 2021-09-07 | 上海非夕机器人科技有限公司 | Sensing assembly, force and torque sensor assembly, robot joint and robot |
| US12042929B2 (en) | 2021-06-17 | 2024-07-23 | Shanghai Flexiv Robotics Technology Co., Ltd. | Sensing assembly, force and torque sensor assembly, robot joint and robot |
-
2017
- 2017-06-13 CN CN201720683097.XU patent/CN206772482U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668669A (en) * | 2019-01-12 | 2019-04-23 | 尚廷东 | A kind of pin-connected panel cable force measurement device for the measurement of rope rope tension |
| CN113358246A (en) * | 2021-06-17 | 2021-09-07 | 上海非夕机器人科技有限公司 | Sensing assembly, force and torque sensor assembly, robot joint and robot |
| CN113358246B (en) * | 2021-06-17 | 2024-01-05 | 上海非夕机器人科技有限公司 | Sensing assembly, force and torque sensor assembly, robot joint and robot |
| US12042929B2 (en) | 2021-06-17 | 2024-07-23 | Shanghai Flexiv Robotics Technology Co., Ltd. | Sensing assembly, force and torque sensor assembly, robot joint and robot |
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